253203169321 has 2 divisors, whose sum is σ = 253203169322. Its totient is φ = 253203169320.

The previous prime is 253203169313. The next prime is 253203169333. The reversal of 253203169321 is 123961302352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242989843600 + 10213325721 = 492940^2 + 101061^2 .

It is a cyclic number.

It is not a de Polignac number, because 253203169321 - 2³ = 253203169313 is a prime.

It is a super-2 number, since 2×253203169321² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253203169421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126601584660 + 126601584661.

It is an arithmetic number, because the mean of its divisors is an integer number (126601584661).

Almost surely, 2^253203169321 is an apocalyptic number.

It is an amenable number.

253203169321 is a deficient number, since it is larger than the sum of its proper divisors (1).

253203169321 is an equidigital number, since it uses as much as digits as its factorization.

253203169321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 253203169321 in words is "two hundred fifty-three billion, two hundred three million, one hundred sixty-nine thousand, three hundred twenty-one".